Council of Hieria
Coordinates: 40°58′22.7″N 29°2′36.7″E / 40.972972°N 29.043528°E
The iconoclast Council of Hieria was a Christian council of 754 which viewed itself as ecumenical, but was later rejected by the Eastern Orthodox and Roman Catholic Churches. It was summoned by the Byzantine Emperor Constantine V in 754 in the palace of Hieria opposite Constantinople. The council supported the emperor's iconoclast position in the Byzantine iconoclasm controversy.
Opponents of the council described it as the Mock Synod of Constantinople or the Headless Council because no patriarchs or representatives of the five main patriarchs were present: Constantinople was vacant, Antioch, Jerusalem and Alexandria were controlled by Islamic rulers, while Rome was not asked to participate. Its rulings were anathematized at the Lateran Council of 769 before being overturned almost entirely by the Second Council of Nicaea in 787, which supported the veneration of icons.
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